Post-MoonLord Calamity is based and balanced around itself, to the point that by the time you get to DoG weapons from other Post-MoonLord mods like Thorium or Spirit become obsolete. All of it is supposed to be on a higher level of difficulty, reaching insane degrees with Death Mode. And yes, bosses like DoG and Yharon require a metric crap-ton of patience and skill - that's their entire purpose, not to mention SCal. Those bosses are made to be obscenely difficult, to the point that making the game slow down is better so you can react faster. I definitely had to do that, and it took me dozens of tries to beat DoG and quite a handful fighting Yharon in Death Mode (still haven't beat SCal yet).
I personally have no problem with those difficult bosses existing, as it has been shown many
many times that they are certainly possible to beat, you just have to have a lot of patience and a lot of skill, both of which I was surprised to find in myself trying to beat those bosses over and over and over again. And considering how much of a piece of crap my computer is, I was amazed at it even being able to load those bosses properly.
A lot of Post-MoonLord Calamity comes down to remembering patterns and playing around them, like not necessarily keeping time on the 15~ second timer for DoG's patterns, but recognizing how he's moving and remembering what he's going to do, same with Yharon and SCal. Give yourself as much space to dodge as possible (build an arena, even if it's just lengths of platforms), and use anything and everything to your advantage
without actually cheating (i.e. god-mode or purposefully-overpowered mod weapons with like 99999999 damage or something). For example, my biggest problem against DoG wasn't the bit-by-bit damage I was taking, but being unable to get out of the way of his superfast charges in Death Mode, leading to many, many insta-deaths that were my own fault for not timing my dashes and Rod-of-Discord uses properly. Once I got a handle on boss patterns, though, most of them were pretty darn
fun. I got a lot of enjoyment out of facing DoG head-on, then Discord-ing just away from him as he charged at me at light-speed, then pumping him full of bullets and magic, then dashing away if he got too close. Also, that feeling of finally killing such a ball-bustingly-difficult fight, the sense of accomplishment in doing it
legitimately, is one of the biggest points (I think of Dark Souls, in this regard) of making those bosses so hard. Because it is certainly possible to beat those bosses without cheating, and they aren't really cheap. Just obscenely difficult.
In essence, I don't think there's much of a problem with the boss fights. (Personal favorite though is Ceaseless Void - dodging and weaving through the waves of Dark Energy and mass-murdering them with everything I had was a
blast) Yes, the end-game bosses have their "quirks", but it all makes sense lore-wise and boss fight-wise they aren't really issues, just patterns to work around. Once I got used to them, they weren't tedious. And once I had the proper weapons after killing the bosses the first time, I didn't have much problem going back and farming them. I'll admit, cheating some and absolutely destroying some of the bosses can be fun, but doing that to actually progress through the game isn't the point, and some of the bosses are built around not letting you do that, or at least not very easily (looking at you
SCal).
I'll also admit that a lot of people don't find this fun at all and think the bosses are cheap pieces of crap that need to be balanced, but I don't think so. As I said before, and as the devs have said, Post-MoonLord Calamity is based and balanced around itself, item-wise and boss-wise. And as impatient as I am, I found a fondness for fighting the bosses and learning their attack patterns and persevering until I finally killed the bastards. Yes, I got frustrated, and even had to stop and come back later at a few points. But that's part of the point of the insane difficulty. If you're part of the group that well-and-truly doesn't have the patience to fight them, that's fine. This mod just isn't for you. The devs aren't going to accommodate the people that don't have the patience/skill when the entire point is to have the sufficient patience/skill. Yes, they'll do a few balance changes here and there, but nothing so drastic. If a noob like me can beat them with enough work, then I have a feeling that most of you all can too (not accounting for glitches and bugs and lag making the game unplayable, because those can and have happened, to me and others, and needed to be fixed before I could move on; though if your computer itself just isn't up-to-par then you're kinda SOL).
Something I want to point out and really want to honor the devs for is how the bosses don't come down to luck. All of my talk about patience and skill is just that, not luck. In fact, LORDE was an entire parody of the luck-based
ty boss-fight that, at least to me, pointed out that pretty much every other boss in Calamity was very well-made without purely luck-based properties. DoG doesn't
randomly change phases, Yharon doesn't
randomly regain massive amounts of HP, SCal doesn't
randomly turn into a bullet hell, etc. The only one I can really think of that has random patterns is Providence, which are noticeable enough to not be considered cheap, especially by luck-based standards, as none of her attack patterns are particularly more difficult over the others; also of note, she does go into her "cocoon" more often at low HP (at least every time I fought her), making you time your Rage and Adrenaline in Revengeance/Death Mode around that "phase" instead of immediately after filling the meters. The randomness/unpredictability in Providence's fight makes you
think about what you're doing, and does not make the fight totally luck-based.
---
TL;DR - Post-MoonLord Calamity is based and balanced around itself, not other mods or vanilla; the bosses are
fun and
purposefully insanely difficult but
not cheap, and require
practice; if you don't have the patience or the skill then this mod isn't for you, plain and simple. I'm not calling you a wimp or a baby, but it just isn't for you, and the devs aren't going to accommodate for you. And on that note,
please be kind to the devs. Constructive criticism is perfectly fine, but don't be consistently rude/screechy, because then you do actually sound like a baby, and no one wants that. The devs have put so much work into this mod - and, yes, the Abyss still has its...issues, at the time of this writing, but they're being worked on. Again, constructive criticism is fine -
wanted - but surrounding it with unnecessary rudeness and hostility is...off-putting, to say the least.